When entrepreneurs come to me with that “million dollar idea,” I have to tell them that an idea alone is really worth nothing. It’s all about the execution, and investors invest in the people who can execute, or even better, have a history of successful execution. Execution is making things happen, and for startups it usually means making change happen, which is even more difficult.

For most people, execution is one of those things that seems obvious after the fact when done correctly, but is hard to specify for those trying to learn to do it better. Recently, I finished a new book on this subject, “The 4 Disciplines of Execution,” by Chris McChesney, Sean Covey, and Jim Huling, which seems to talk to startups as well as the corporate world it was written for.

These authors argue effectively that the hard part of executing most strategies is changing human behavior – first the people on your team, then partners, vendors, and most importantly, customers. No startup founder or leader can just order these changes to happen, because it isn’t that easy to get other people to change their ways. Changing yourself is tough enough.

Here are four key disciplines that I believe the best business leaders follow to expedite the change and forward progress implicit in the successful execution of a million dollar idea:

Focus always on one or two top priority goals. We all live with the stark reality that the more we try to do, the less well we do on any of the elements. Thus focus is a natural principle. Narrow you and your team’s focus to one or two wildly important goals, and don’t let these get lost in the whirlwind of daily urgent tasks and communications.

Identify and act on leading measures first. Some actions have more impact than others when reaching for a goal. Hold the lag measures for later (results available after the fact), and focus on lead measures first (predictive of achieving a goal). For example, more customer leads is predictive of more sales revenue later.

Define a compelling scoreboard. People on your team play differently when someone is keeping score, and even better when they are keeping score, and even better when they have defined how their score is measured. This is the discipline of engagement. If the scoreboard isn’t clear, play will be abandoned in the whirlwind of other activities.

Create a frequent forum for accountability. Unless we feel accountability, and see accountability on a regular cadence, it also disintegrates in the daily whirlwind. It’s even better if team members create their own commitments, which become promises to the team, rather than simply job performance. People want to make a contribution and win.

These four disciplines must be implemented as a process, not as an event. That means your team needs to see them as a normal and continuous focus, not a one-time push which fades in the rush of other daily priorities. The team needs to see the process practiced by the startup founder, as well as preached regularly.

Startup founders also need to realize that building and managing a company is quite different from learning to search for and solidify an idea that can grow into a company. Every entrepreneur has to navigate that personal change from thinking to doing to managing.

It’s not only the change from thinking to managing, but also the change and learning from constant iterations. Major changes, called pivots, are terrifying to a team that has put months of constant focus into executing what they thought was a great idea. If you don’t have an execution process, you have chaos.

Overall, every entrepreneur should be concerned if they don’t regularly feel stretched beyond their comfort zone, meaning mastering the art of execution if you are mainly creative, or developing creativity if you are mainly process driven. Don’t forget that the fun and challenge is in the learning, so enjoy the ride. The entrepreneur lifestyle is not meant to be comfortable.